WIJAYANTO, Setyo Dwi; NAZARUDDIN, Nazaruddin; SEMBIRING , Meilita Tryana. A Circular Economy-Based Strategy for the Development of Biochar from Oil Palm Empty Fruit Bunches to Increase Added Value at PT Perkebunan Nusantara IV. Journal Research of Social Science, Economics, and Management, [S. l.], v. 5, n. 12, p. 12870–12890, 2026. DOI: 10.59141/jrssem.v5i12.1573. Disponível em: https://jrssem.publikasiindonesia.id/index.php/jrssem/article/view/1573. Acesso em: 6 jul. 2026.